summaryrefslogtreecommitdiff
path: root/include/uapi/linux/sync_file.h
diff options
context:
space:
mode:
authorGustavo Padovan <gustavo.padovan@collabora.co.uk>2016-04-28 10:46:57 -0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-04-29 17:37:10 -0700
commit460bfc41fd52959311ed0328163f785e023857af (patch)
tree314551febc87c2a8d4fadfd1e49e3ef4ab3add7e /include/uapi/linux/sync_file.h
parent92e06213f11a87effad8bdd4d910958b89eec044 (diff)
dma-buf/sync_file: de-stage sync_file headers
Move sync_file headers file to include/ dir. Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/uapi/linux/sync_file.h')
-rw-r--r--include/uapi/linux/sync_file.h100
1 files changed, 100 insertions, 0 deletions
diff --git a/include/uapi/linux/sync_file.h b/include/uapi/linux/sync_file.h
new file mode 100644
index 000000000000..413303d37b56
--- /dev/null
+++ b/include/uapi/linux/sync_file.h
@@ -0,0 +1,100 @@
+/*
+ * Copyright (C) 2012 Google, Inc.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#ifndef _UAPI_LINUX_SYNC_H
+#define _UAPI_LINUX_SYNC_H
+
+#include <linux/ioctl.h>
+#include <linux/types.h>
+
+/**
+ * struct sync_merge_data - data passed to merge ioctl
+ * @name: name of new fence
+ * @fd2: file descriptor of second fence
+ * @fence: returns the fd of the new fence to userspace
+ * @flags: merge_data flags
+ * @pad: padding for 64-bit alignment, should always be zero
+ */
+struct sync_merge_data {
+ char name[32];
+ __s32 fd2;
+ __s32 fence;
+ __u32 flags;
+ __u32 pad;
+};
+
+/**
+ * struct sync_fence_info - detailed fence information
+ * @obj_name: name of parent sync_timeline
+* @driver_name: name of driver implementing the parent
+* @status: status of the fence 0:active 1:signaled <0:error
+ * @flags: fence_info flags
+ * @timestamp_ns: timestamp of status change in nanoseconds
+ */
+struct sync_fence_info {
+ char obj_name[32];
+ char driver_name[32];
+ __s32 status;
+ __u32 flags;
+ __u64 timestamp_ns;
+};
+
+/**
+ * struct sync_file_info - data returned from fence info ioctl
+ * @name: name of fence
+ * @status: status of fence. 1: signaled 0:active <0:error
+ * @flags: sync_file_info flags
+ * @num_fences number of fences in the sync_file
+ * @pad: padding for 64-bit alignment, should always be zero
+ * @sync_fence_info: pointer to array of structs sync_fence_info with all
+ * fences in the sync_file
+ */
+struct sync_file_info {
+ char name[32];
+ __s32 status;
+ __u32 flags;
+ __u32 num_fences;
+ __u32 pad;
+
+ __u64 sync_fence_info;
+};
+
+#define SYNC_IOC_MAGIC '>'
+
+/**
+ * Opcodes 0, 1 and 2 were burned during a API change to avoid users of the
+ * old API to get weird errors when trying to handling sync_files. The API
+ * change happened during the de-stage of the Sync Framework when there was
+ * no upstream users available.
+ */
+
+/**
+ * DOC: SYNC_IOC_MERGE - merge two fences
+ *
+ * Takes a struct sync_merge_data. Creates a new fence containing copies of
+ * the sync_pts in both the calling fd and sync_merge_data.fd2. Returns the
+ * new fence's fd in sync_merge_data.fence
+ */
+#define SYNC_IOC_MERGE _IOWR(SYNC_IOC_MAGIC, 3, struct sync_merge_data)
+
+/**
+ * DOC: SYNC_IOC_FENCE_INFO - get detailed information on a fence
+ *
+ * Takes a struct sync_file_info_data with extra space allocated for pt_info.
+ * Caller should write the size of the buffer into len. On return, len is
+ * updated to reflect the total size of the sync_file_info_data including
+ * pt_info.
+ *
+ * pt_info is a buffer containing sync_pt_infos for every sync_pt in the fence.
+ * To iterate over the sync_pt_infos, use the sync_pt_info.len field.
+ */
+#define SYNC_IOC_FILE_INFO _IOWR(SYNC_IOC_MAGIC, 4, struct sync_file_info)
+
+#endif /* _UAPI_LINUX_SYNC_H */